The solution is not to inhibit freedom of thought and speech, it is to teach new generations of people to be more critical.
Ultimately in the long run democracy and free societies are always more likely to triumph against authoritarian societies, because the will of the people prevents the governments from endlessly doing moronic or corruptive actions. If they do, they will get voted out in the next election cycle. Authoritarian governments don’t have that luxury, if the glorious leader decides to run against a wall year after year in full speed because they think they are right, they will and nobody dares to stop the train.
So the enemy is not disinformation, it is the gullible mind. We need to educate critical thinking, without going too deep into values. Then our societies will sort this shit out.
On a tangent, when a political entity is dismantling education of critical thought and science in school systems, you should know it’s because they know their political rule depends on people not thinking critically.